Day 9 antagonists

Day 9's conflicts arose from a drone hijacking system. For the first part of the day, this revolved around a gambit by Margot Al-Harazi and her children Simone and Ian to hijack U.S. drones to commit terrorist attacks. For the final hours of the day, this revolved around a gambit by Cheng Zhi to hijack the core components of the override hardware, and use them to bypass security measures of military systems across the world and provoke a third world war.

Karl Rask: arms dealer and business partner of Margot Al-Harazi, and former employer of Jack Bauer, who went undercover with Rask to investigate the threat; committed suicide by grenade during MI5 raid

Cheng Zhi: disgraced former Chinese intelligence agent and nemesis of Jack; hired Adrian Cross to design a device to neutralize defense technologies worldwide, in retaliation for China's abandonment of him; used a large count of mercenaries in his plot; beheaded by Jack Bauer